.sNp File Viewer

Version 1.7.0 (276 KB) by Matthew Moschella
A MATLAB GUI used to parse and graph .sNp files (Touchstone Format).
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Updated 23 Jul 2025

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This GUI allows the user to select one or more .sNp files - parse their data, graph the results and save this data to a .mat file.
Currently supports .s1p - .s4p files.
Main App to be run from 'snp_viewer.m'. The live functions (.mlx) are functions called by the main snp_viewer.m.
Some limitations:
  • Data files have to all be located in the same target directory.
  • Desired Sxx MUST be common among all files. (For example: If parsing .s2p & .s4p files, ONLY S11, S12, S21, S22 are available to parse).
  • Currently only outputs parsed data as a structured .mat file and .fig file.
Written using MATLAB 2024a - not sure how far back/forward the compatibility goes...

Cite As

Matthew Moschella (2026). .sNp File Viewer (https://www.mathworks.com/matlabcentral/fileexchange/181577-snp-file-viewer), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2024a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.7.0